After crossing the Pjorsa River, the ground became a landscape of all volcanic rock ranging from volcanic pebbles, to volcanic ash, to small volcanic rocks, to volcanic refrigerator size rocks. Along with the change in landscape the area yielded no streams of any kind for 3 days. We had to get all our water from small glacial melt pools and water seeps. Hekla is the largest of the surrounding volcanic mountains, peaking about 1,400 meters, large for Iceland. Hekla is also one of many active volcanoes on Iceland. Hekla's last eruption was in 2001 and 1991 before that. We peaked the steep assent up Helka and then traveled towards Landmannalauger.